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WO2017202323A1 - Élément d'image photosensible, dispositif de collecte d'images, dispositif de collecte d'empreintes digitales, et dispositif d'affichage - Google Patents

Élément d'image photosensible, dispositif de collecte d'images, dispositif de collecte d'empreintes digitales, et dispositif d'affichage Download PDF

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Publication number
WO2017202323A1
WO2017202323A1 PCT/CN2017/085604 CN2017085604W WO2017202323A1 WO 2017202323 A1 WO2017202323 A1 WO 2017202323A1 CN 2017085604 W CN2017085604 W CN 2017085604W WO 2017202323 A1 WO2017202323 A1 WO 2017202323A1
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WO
WIPO (PCT)
Prior art keywords
image
light
view
photosensitive
blocking film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/085604
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English (en)
Chinese (zh)
Inventor
张明方
钮兴昱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vkansee Technology Co Ltd
Original Assignee
Vkansee Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vkansee Technology Co Ltd filed Critical Vkansee Technology Co Ltd
Priority to US16/303,344 priority Critical patent/US20190171861A1/en
Priority to KR1020187037355A priority patent/KR20190013888A/ko
Priority to EP17802169.7A priority patent/EP3467705A4/fr
Priority to JP2018562251A priority patent/JP2019519922A/ja
Publication of WO2017202323A1 publication Critical patent/WO2017202323A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1324—Sensors therefor by using geometrical optics, e.g. using prisms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/117—Identification of persons
    • A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
    • A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/1335—Combining adjacent partial images (e.g. slices) to create a composite input or reference pattern; Tracking a sweeping finger movement

Definitions

  • the present invention relates to the field of image acquisition technologies, and in particular, to a photosensitive pixel having a narrow field of view and an image collector and an optical fingerprint collection device using the same.
  • the minimum unit for receiving optical signals in the image collector is a photosensitive pixel, and a plurality of photosensitive pixels are usually disposed in the image collector.
  • Photosensitive pixels used in commercially available image capturers have a wide field of view.
  • the angle of view of the photosensitive pixel refers to the maximum angle formed by incident light rays in different directions in which the photosensitive pixel can respond.
  • Figure 1 is a diagram showing the field of view of a photosensitive pixel in a conventional image collector. As shown in FIG. 1, the angle of view of the photosensitive pixel 01 on the existing image collector is close to 180 degrees, that is, the maximum angle between the incident rays 02 is close to 180 degrees.
  • An object of the present invention is to provide an image acquisition device having a narrow field of view and capable of meeting the production requirements of an ultra-thin thickness of a manufacturer, and capable of obtaining a clear image, and an image collector and fingerprint collection using the image collector.
  • Equipment and display screen with fingerprint collection function is provided.
  • a photosensitive pixel comprising a cavity for accommodating a photoelectric conversion unit, The upper surface of the cavity is covered with a light-blocking film with a light-transmissive aperture, and a transparent dielectric layer and a microlens are sequentially arranged from below to above the light-blocking film;
  • the object surface of the set area has an object-side field of view defining an angle of view; the object point in the object-side field of view, the image point or image spot falling in the light-transmitting aperture of the light-blocking film; The object point outside the object field of view, the image point or image spot falling outside the light transmission hole.
  • the microlens is a curved convex lens.
  • the light-transmitting aperture and the center line of the microlens are perpendicular to the upper surface of the light-blocking film (hereinafter referred to as a positive object field of view) .
  • the optical axis is not perpendicular to the upper surface of the light-blocking film (hereinafter referred to as a diagonal square field of view).
  • the object field of view corresponds to an angle of view of less than 10 degrees.
  • the light blocking film is a film made of an opaque material, and the thickness of the light blocking film is less than 100 um.
  • an image collector comprising a plurality of photosensitive pixels as described above, wherein said plurality of photosensitive pixel arrays are arranged, from above to above said plurality of photosensitive pixels A low refractive index layer and a transparent cover are sequentially provided.
  • Each of the photosensitive pixels has an object point of the object-side field of view corresponding to the upper surface of the transparent cover, the image point of which falls within the light-transmissive aperture of the light-blocking film; the object point outside the object field of view, The image dots fall outside the light-transmissive aperture.
  • a light blocking wall is disposed in the transparent dielectric layer between the microlens and the light blocking film to prevent signal crosstalk between adjacent photosensitive pixels.
  • all of the photosensitive cells included in the image collector have a positive object field of view and are located on the same planar substrate.
  • all of the photosensitive cells included in the image collector have the same oblique square field of view and the optical axes are parallel and are located on the same planar substrate.
  • the photosensitive pixel is located on a curved substrate that is convex or concave toward the transparent cover.
  • the image pickup device includes photosensitive pixels arranged regularly from the inside to the outside centering on a certain pixel or some pixels, and the central photosensitive pixel has a positive object field of view and other photosensitive pixels.
  • the object has a diagonal field of view; from the center area, the optical axes of the pixels are gradually inclined outward, that is, the angle between the optical axis of each pixel and the upper surface of the light blocking film is gradually reduced.
  • a fingerprint collection device comprising the image collector as described above.
  • a display device supporting a fingerprint collection function comprising a plurality of developing pixels, and a photosensitive pixel as described above is disposed between the display pixels.
  • the photosensitive pixel in the present application integrates a transparent dielectric layer and a microlens, and through the small holes and the microlens on the light blocking film, the photosensitive pixel itself can restrain the incident optical path, so that the photosensitive pixel A narrow field of view with a small field of view, so that an image collector using such a photographic element can no longer be attached to a lens system or a small aperture imaging system to constrain the incident optical path, so that the thickness of the image collector is thinned while It also enables the image capturer to capture sharp images.
  • Figure 1 is a schematic view showing a field of view of a photosensitive pixel in a conventional image collector
  • FIG. 2 is a schematic structural view of a photosensitive pixel according to a preferred embodiment
  • FIG. 3 is a schematic structural view of a photosensitive pixel according to another preferred embodiment
  • FIG. 4 is a schematic structural diagram of an image collector according to a preferred embodiment
  • FIG. 5 is a schematic structural diagram of an image collector according to another preferred embodiment
  • FIG. 6 is a schematic structural diagram of an image collector according to another preferred embodiment
  • Figure 7 is a block diagram showing the structure of an image collector in a specific embodiment
  • FIG. 8 is a schematic structural diagram of an image collector according to another preferred embodiment.
  • FIG. 9 is a schematic structural diagram of an image collector according to another preferred embodiment.
  • FIG. 10 is a schematic structural diagram of an image collector according to another preferred embodiment.
  • FIG. 11 is a schematic structural diagram of an image collector according to another preferred embodiment.
  • FIG. 12 is a schematic structural diagram of an image collector according to another preferred embodiment.
  • FIG. 13 is a schematic structural diagram of a display device supporting a fingerprint collection function according to a preferred embodiment.
  • a photosensitive pixel includes a cavity 1 for accommodating a photoelectric conversion unit, and a light blocking film 3 having a light-transmissive aperture 2 is covered above the cavity 1, above the light-blocking film 3.
  • a transparent dielectric layer 4 and a microlens 5 are provided in this order from bottom to top.
  • the microlens 5 in the present application is a curved convex lens.
  • the center line of the light transmission aperture 2 and the microlens 5 (ie, the optical axis) is perpendicular to the upper surface of the light blocking film 3, so that the center of the object field of view is at the center normal of the photosensitive pixel (ie, the situation is positive) Object side field of view).
  • the light blocking film 3 is a film made of an opaque material, and the thickness of the light blocking film 3 is less than 100 um.
  • the field of view of the photosensitive element in the present application can be defined by the structure of the light-transmitting aperture 2, the microlens 5 and the transparent dielectric layer 4.
  • the object field of view 6 corresponding to the angle of view.
  • the field of view of the photosensitive pixel in this embodiment is less than 10 degrees.
  • the object field of view of the photosensitive pixel in this application may be referred to as a narrow object field of view.
  • the field of view of the photosensitive pixel is less than 10 degrees, which is merely exemplary.
  • Those skilled in the art can adjust the focal length of the microlens, the thickness of the transparent dielectric layer, and the aperture of the transparent aperture according to the production requirements. Corresponding angle of view.
  • the present embodiment defines the field of view of the photosensitive pixel in the present application by the structure of the light-transmitting aperture, the microlens and the transparent dielectric layer, and the main part of the image point or the image spot corresponding to the object point in the defined object field of view Falling in the light-transmitting aperture 2 of the light-blocking film 3, so that the light emitted from the object point in the object field of view enters the cavity 1 through the small hole, and accordingly, the photoelectric conversion unit can receive the light of higher intensity, thereby The image in the field of view of the object can be clearly imaged.
  • the main part of the image point or image spot falls outside the light transmission hole 2, so that the photoelectric conversion unit cannot feel or can only feel the object field outside the field with low intensity.
  • the image outside the object's field of view cannot be acquired or the acquired portion does not affect the imaging of the light in the object field of view on the photoelectric conversion unit.
  • the present embodiment integrates a thick transparent dielectric layer 4 and a microlens 5 on the photosensitive pixels, and passes through the small holes and the microlenses 5 on the light blocking film 3.
  • the photosensitive pixel itself can constrain the incident optical path, so that the photosensitive pixel has a narrow field of view with a small field of view, so that the image collector using the photosensitive pixel can no longer be attached to the lens system or the small hole.
  • the imaging system constrains the incident light path while also enabling the image capturer to capture sharp images.
  • the purpose is to increase the amount of light entering during the oblique direction, which is substantially different from the purpose and implementation method in the present application in which the photosensitive pixel has a narrow field of view.
  • FIG. 3 is a schematic structural view of a photosensitive pixel according to another preferred embodiment.
  • the structure of the photosensitive pixel shown in FIG. 3 is similar to that of the photosensitive pixel shown in FIG. 2, except that its optical axis is not perpendicular to the upper surface of the light-blocking film 3, that is, its optical axis is opposite to the light-blocking film 3.
  • the upper surface is tilted so that the center of the object field is not at the center normal of the photosensitive pixel (ie, the case is the oblique square field of view).
  • the oblique field of view 6 in the present application corresponds to an angle of view of less than 10 degrees.
  • the angle between the center line of the light-transmitting small hole 2 and the microlens 5 and the upper surface of the light-blocking film 3 is not specifically limited. Those skilled in the art can set the light-transmitting small hole 2 according to the production requirements. An angle between the line connecting the center of the microlens 5 and the upper surface of the light blocking film 3.
  • the working principle of the photosensitive pixel shown in FIG. 3 is the same as that of the photosensitive pixel shown in FIG. 2, and details are not described herein again.
  • the image collector includes a plurality of photosensitive pixels as shown in FIG. 2 or 3.
  • a plurality of photosensitive pixel arrays are arranged and integrally formed.
  • a low refractive index layer 8 and a transparent cover 9 are provided in this order from the bottom to the top of the plurality of photosensitive pixels.
  • each photosensitive pixel is on the object point of the object field of view 10 corresponding to the upper surface of the transparent cover, and the image point falls in the light transmission aperture 2 of the light blocking film 3.
  • the object point outside the object field of view the image point falls outside the light transmission hole 2.
  • FIG. 5 is a block diagram showing an image collector according to another preferred embodiment.
  • the image collector of FIG. 5 is similar in structure to the image collector shown in FIG. 4, except that it is located in the transparent dielectric layer 4 between the microlens 5 and the light blocking film 3 between adjacent photosensitive pixels.
  • the light blocking wall 11 is disposed at a position of the cavity 1 for accommodating the photoelectric conversion unit to prevent signal crosstalk between the photosensitive pixels, as shown in FIG. 5, crosstalk light from the left and right sides of the object side (shown by a broken line in the figure) After passing through the microlens 5, it is blocked by the light blocking wall 11.
  • FIG. 6 is a block diagram showing an image collector according to another preferred embodiment.
  • the image collector of FIG. 6 is similar in structure to the image collector shown in FIG. 4, except that it is located in the transparent dielectric layer 4 between the microlens 5 and the light blocking film 3 between adjacent photosensitive pixels.
  • the position of the microlens 5 is such that the light blocking wall 11 is provided to prevent signal crosstalk between the photosensitive pixels (shown by a broken line in the figure).
  • Figure 7 shows a structural parameter diagram of an image collector in a specific embodiment.
  • the transparent cover has a thickness of 1.0 mm and a refractive index of 1.52.
  • the thickness of the low refractive index layer (the lower surface of the transparent cover to the apex of the microlens layer) was 5 um, and the low refractive index layer was air or vacuum, and the refractive index was 1.0.
  • the transparent dielectric layer has a refractive index of 1.46 and a thickness of 16 um (including the thickness of the microlens, 16 um being the thickness of the apex of the microlens to the upper surface of the light blocking film).
  • the light-shielding film has a thickness of 500 nm and is made of an opaque metal material.
  • the small hole is made of a circular hole having a diameter of 500 nm, and is optically etched, and the center of the small hole is aligned with the center of the photosensitive pixel.
  • the photosensitive pixels are square and have a side length of 5.86um.
  • the microlens is a spherical convex lens with a radius of 5 um, and the center of the lens is aligned with the center of the photosensitive pixel.
  • the diameter of the object field of view of the narrow field of view pixel (the upper surface of the transparent cover) is 30 um, and the radius of the object field of view corresponding to the upper surface of the transparent cover is 15 um.
  • the light in the object field of view satisfying the above-mentioned angle of view can be confined to the optoelectronics by the confinement of the transparent cover, the low refractive index layer, the microlens 5, the transparent dielectric layer 4 and the transparent aperture 2
  • the conversion unit, the light outside the field of view cannot reach the photoelectric conversion unit, thereby forming a clear image; and since the transparent medium layer 4 and the microlens 5 are integrated in the photosensitive pixel, the conventional lens system is no longer required, thereby making the image Collector thickness Enough to develop ultra-thin.
  • FIG. 8 is a block diagram showing an image collector according to another preferred embodiment.
  • the image collector of Fig. 8 is similar in structure to the image collector shown in Fig. 4, except that a photosensitive pixel having a diagonal square field of view is employed.
  • a photosensitive pixel having a diagonal square field of view is employed.
  • an image collector with a slanted field of view sensitized image can obtain a clearer image and less interference from stray ambient light. .
  • FIG. 9 is a block diagram showing the structure of an image collector according to another preferred embodiment.
  • the image collector of Fig. 9 is similar in structure to the image collector shown in Fig. 4, except that a photosensitive pixel having a positive object field of view and a photosensitive pixel having a diagonal square field of view are simultaneously employed.
  • the central area is a positive object square field pixel, and the central area is a photosensitive pixel with a diagonal object field;
  • the optical axis of each pixel is outward from the central area (such as the optical axis 14 and the optical axis in FIG. 9) 15 is gradually inclined outward, and the angle between the optical axis and the upper surface of the light blocking film is gradually reduced, and the optical axes of the respective pixels are radially distributed.
  • This special photographic pixel arrangement can enlarge the image field of view of the image collector (refer to the imaging range of the image collector, different from the object angle of view of a single pixel), and clearly capture a larger spatial extent.
  • FIG. 10 is a block diagram showing an image collector according to another preferred embodiment.
  • the image collector of FIG. 10 is similar in structure to the image collector shown in FIG. 4, except that the photosensitive pixel is located on the curved substrate 12 that is convex toward the transparent cover, which can also enlarge the object side of the collector.
  • the angle of view clearly captures images in a larger spatial extent.
  • FIG. 11 is a block diagram showing the structure of an image collector according to another preferred embodiment.
  • the image collector of FIG. 11 is similar in structure to the image collector shown in FIG. 4, except that the photosensitive pixel is located on the curved substrate 12 recessed toward the transparent cover, so that for a distant target, Expand the object's angle of view of the collector and clearly capture images in a larger spatial extent.
  • Figure 12 is a block diagram showing the structure of an image collector according to another preferred embodiment.
  • the image collector of FIG. 12 is similar in structure to the image collector shown in FIG. 4, except that the photosensitive pixel is located on the curved substrate 12 that is recessed toward the transparent cover, so that for a closer target, it can be reduced.
  • the object's object field of view angle clearly amplifies a small range of object field of view into a larger imaging space, enabling magnification imaging.
  • a fingerprint collection device comprising an image collector of a different embodiment as described above.
  • FIG. 13 is a schematic structural diagram of a display device supporting a fingerprint collection function according to a preferred embodiment.
  • the display device includes a plurality of developing pixels 601 and a display panel 602, and a photosensitive pixel 603 having a set viewing angle as described above is further disposed between the display pixels 601.
  • the field of view of the photosensitive pixel 603 of this embodiment has a narrow object-side field of view.
  • the photosensitive pixel array is arranged, and the photosensitive pixel 602 having a narrow object field of view can obtain a clear fingerprint image for the fingerprint printed on the display panel.
  • the object's field of view of the photographic element is relatively wide (also known as the wide object field of view)
  • the object field of view of adjacent photographic elements will overlap greatly, and the output image will be blurred.
  • Figure 13 is a schematic structural diagram of a display device supporting a fingerprint collection function according to a preferred embodiment.
  • the display device includes a plurality of developing pixels 601 and a display panel 602, and a photo
  • the transparent medium layer 4 and the microlens 5 are integrated on the photosensitive pixel in the present application.
  • the photosensitive pixel Through the small holes and the microlens 5 on the light blocking film 3, the photosensitive pixel itself can restrain the incident optical path. Having the photosensitive pixel have a narrow field of view with a small field of view, so that the image collector using the photographic element can no longer adhere to the lens system or the aperture imaging system to constrain the incident optical path, so that the thickness of the image collector Thinning, while also enabling the image capturer to capture sharp images.

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Abstract

L'invention concerne un élément d'image photosensible, un dispositif de collecte d'images, un dispositif de collecte d'empreintes digitales, et un dispositif d'affichage prenant en charge une fonction de collecte. L'élément d'image photosensible comprend une chambre (1) destinée à recevoir une unité de conversion optique-électrique. Un film de blocage de lumière (3) dans lequel des trous d'épingle de transmission de lumière (2) sont formés recouvre le dessus de la chambre (1). Une couche de support transparent (4) et une microlentille (5) sont placées séquentiellement au-dessus du film de blocage de lumière (3). La microlentille (5), la couche de support transparent (4) et les trous d'épingle de transmission de lumière (2) permettent à l'élément d'image photosensible d'avoir un champ d'objet (6) destiné à limiter un angle de champ. Un point d'image ou un chatoiement d'image d'un point d'objet dans le champ d'objet (6) tombe dans un trou d'épingle de transmission de lumière (2) correspondant dans le film de blocage de lumière (3), et un point d'image ou un chatoiement d'image du point d'objet à l'extérieur du champ d'objet (6) tombe à l'extérieur d'un trou d'épingle de transmission de lumière (2) correspondant. Les trous d'épingle et la microlentille sur le film de blocage de lumière limitent le chemin optique incident, de telle sorte que l'élément d'image photosensible a un champ visuel étroit, et le dispositif de collecte d'images basé sur un élément d'image photosensible ayant un champ visuel étroit n'a pas besoin de dépendre d'un système de lentille ou d'un système d'imagerie à trou d'épingle pour limiter le chemin optique incident, et, en conséquence, par conséquent au moment où le dispositif de collecte d'images peut obtenir une image nette, un dispositif de collecte d'images plus mince devient possible, ce qui aide le dispositif de collecte d'images à s'intégrer à un autre dispositif.
PCT/CN2017/085604 2016-05-25 2017-05-24 Élément d'image photosensible, dispositif de collecte d'images, dispositif de collecte d'empreintes digitales, et dispositif d'affichage Ceased WO2017202323A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/303,344 US20190171861A1 (en) 2016-05-25 2017-05-24 Image Pixel, Image Acquisition Device, Fingerprint Acquisition Apparatus, and Display Apparatus
KR1020187037355A KR20190013888A (ko) 2016-05-25 2017-05-24 이미지 픽셀, 이미지 획득 장치, 지문 획득 장치 및 디스플레이 장치
EP17802169.7A EP3467705A4 (fr) 2016-05-25 2017-05-24 Élément d'image photosensible, dispositif de collecte d'images, dispositif de collecte d'empreintes digitales, et dispositif d'affichage
JP2018562251A JP2019519922A (ja) 2016-05-25 2017-05-24 撮像素子、画像取得装置、指紋取得装置および表示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610357410.0 2016-05-25
CN201610357410.0A CN107437047A (zh) 2016-05-25 2016-05-25 感光像元、图像采集器、指纹采集设备及显示设备

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WO2017202323A1 true WO2017202323A1 (fr) 2017-11-30

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PCT/CN2017/085604 Ceased WO2017202323A1 (fr) 2016-05-25 2017-05-24 Élément d'image photosensible, dispositif de collecte d'images, dispositif de collecte d'empreintes digitales, et dispositif d'affichage

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US (1) US20190171861A1 (fr)
EP (1) EP3467705A4 (fr)
JP (1) JP2019519922A (fr)
KR (1) KR20190013888A (fr)
CN (1) CN107437047A (fr)
WO (1) WO2017202323A1 (fr)

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US10147757B2 (en) 2015-02-02 2018-12-04 Synaptics Incorporated Image sensor structures for fingerprint sensing
US10181070B2 (en) 2015-02-02 2019-01-15 Synaptics Incorporated Low profile illumination in an optical fingerprint sensor
SE1751613A1 (en) * 2017-12-21 2019-06-22 Fingerprint Cards Ab Biometric imaging device and method for manufacturing the biometric imaging device
US10705272B2 (en) 2015-02-02 2020-07-07 Will Semiconductor (Shanghai) Co., Ltd. Optical fingerprint sensor
CN111401243A (zh) * 2018-02-23 2020-07-10 深圳市汇顶科技股份有限公司 光学传感器模块及其电子设备
EP3701420B1 (fr) 2018-05-07 2021-04-14 WaveTouch Limited Capteur optique compact de détection d'empreintes digitales

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CN107437047A (zh) 2017-12-05
JP2019519922A (ja) 2019-07-11

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